How is the super moon formed
4hw.org: Recently, the eighth super moon in nearly 80 years will be observed all over the world. This super moon also attracts many astronomy enthusiasts and civil servants. This super moon is also the largest and most full moon this year. So do you know the principle of super moon? Let's take a look at it!
After last November, earth people will see the "super moon" again on December 3, that is, tonight. According to reports, this "super moon" is not only the biggest full moon this year, but also the eighth in nearly 80 years.
As the moon circles the earth in an elliptical orbit, the distance between the moon and the earth changes constantly. Therefore, the closer the moon is to the earth when the full moon occurs, the larger the full moon people will see.
Take the "super moon" in November last year as an example. The moon was only 357000 kilometers away from the earth, the closest it has been to the earth since 1948. Compared with the normal full moon, the "super moon" looks significantly larger, and its brightness is 30% higher.
According to astronomers, the full moon on December 3 will also be the last in 2017, which will be about 14% larger than the minimum full moon on June 9 this year.
How the super moon formed
Supermoon is a term put forward by American astrologer Richard middot Noel in 1979. It is a phenomenon that the moon is located near the perigee when the moon is located near the perigee. When the moon is located near the perigee, it happens to appear a new moon, which is called super new moon. When the moon is located near the perigee, it happens to be a full moon, which is called super full moon.
The new moon appears on the first day of each month of the lunar calendar. When the moon moves between the sun and the earth, the moon faces the earth with its dark side, and rises with the sun. People cannot see it. Although the moon is closer to the earth at this time, its actual size has not changed, and people can not see it. Therefore, it is meaningless to call the super new moon, which is no different from the impression of the ordinary new moon.